4,588 results found
    1. Neuroscience

    Striatal direct and indirect pathway neurons differentially control the encoding and updating of goal-directed learning

    James Peak et al.
    Direct and indirect pathway neurons in posterior dorsomedial striatum were found to play distinct roles, with the former necessary for encoding and the latter for updating goal-directed learning.
    1. Chromosomes and Gene Expression

    Identification of protein-protected mRNA fragments and structured excised intron RNAs in human plasma by TGIRT-seq peak calling

    Jun Yao et al.
    Human plasma contains protein-protected mRNA fragments, myriad repeat RNAs, and novel intron RNAs, including a family of structured full-length excised introns, some corresponding to mirtron pre-miRNAs and agotrons.
    1. Evolutionary Biology
    2. Genetics and Genomics

    A large genomic insertion containing a duplicated follistatin gene is linked to the pea aphid male wing dimorphism

    Binshuang Li et al.
    The application of long-read sequencing to the pea aphid wing dimorphism system reveals genomic structural divergence as a genetic mechanism of adaptation.
    1. Cell Biology

    Tripartite suppression of fission yeast TORC1 signaling by the GATOR1-Sea3 complex, the TSC complex, and Gcn2 kinase

    Tomoyuki Fukuda et al.
    Sea3, a presumed subunit of the GATOR2 complex in fission yeast, is required for the GATOR1 function that attenuates TORC1 in parallel with the TSC complex and Gcn2 kinase.
    1. Plant Biology

    Lack of evidence for associative learning in pea plants

    Kasey Markel
    A fully blinded replication of the most convincing report of associative learning in plants failed to reproduce the phenomenon.
    1. Neuroscience

    The frequency gradient of human resting-state brain oscillations follows cortical hierarchies

    Keyvan Mahjoory et al.
    The strongest peak frequency of brain oscillations in a brain area decreases significantly, gradually and robustly along the posterior-anterior axis following the global hierarchy from early sensory to higher order areas.
    1. Microbiology and Infectious Disease

    Microbiota functional activity biosensors for characterizing nutrient metabolism in vivo

    Darryl A Wesener et al.
    A method has been developed to characterize the expressed biochemical activities of gut microbial communities using retrievable, microscopic, fluorescent-labeled glass beads containing chemically bound surface biomolecules.
    1. Neuroscience

    Learning improves decoding of odor identity with phase-referenced oscillations in the olfactory bulb

    Justin Losacco et al.
    Tetrode recordings show that the amplitude of gamma oscillations encodes for information on contextual odorant identity when observed at the peak phase of the theta oscillation in the olfactory bulb.
    1. Cell Biology

    Ribosome collisions trigger cis-acting feedback inhibition of translation initiation

    Szymon Juszkiewicz et al.
    Ribosome collisions along an mRNA are shown to recruit factors that prevent additional ribosomes from initiating translation on that mRNA, thereby providing time to resolve the collision.
    1. Computational and Systems Biology
    2. Evolutionary Biology

    Adaptation to mutational inactivation of an essential gene converges to an accessible suboptimal fitness peak

    João V Rodrigues, Eugene I Shakhnovich
    When an essential metabolic gene in E. coli is mutationally inactivated, subsequent evolution rarely reverts the mutation to wild type but rather follows unexpected paths that rewire metabolic fluxes.

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